function [component,w,h,levels]=readjas(I)
a=readj2k('input/l.jp2');
%colormap(gray(256))
%image(a{1,1}{1,I}.data')
w=a{1,1}{1,I}.width;
h=a{1,1}{1,I}.height;
levels=a{1,1}{1,I}.levels;
%a{1,1}{1,I}.x1
%a{1,1}{1,I}.y1
%a{1,1}{1,I}.x2
%a{1,1}{1,I}.y2
%pause
component=a{1,1}{1,I}.data';
%imshow(component);
%pause
